Summary of Contents for Canon Speedlite 600EX-RT

Introduction The Canon Speedlite 600EX-RT/600EX is a high-output, multi-feature flash unit for Canon EOS cameras, compatible with E-TTL II, E-TTL and TTL autoflash and external flash metering systems. The Speedlite can be used as an on-camera flash that attaches to the hot shoe of the camera (normal shooting), and as a master unit or slave unit during wireless shooting.

Functions of the camera and the Custom Functions and Personal Functions of the Speedlite are at their default settings. All figures are based on the use of four AA/LR6 alkaline batteries and Canon’s testing standards. For explanatory purposes, the illustrations show the Speedlite 600EX-RT.

Getting Started and Basic Operations This chapter describes the preparations before starting flash shooting and the basic shooting operations. Cautions for firing continuous flashes To avoid degrading and damaging the flash head due to overheating, do not fire more than 20 continuous flashes.

Recycling Time Quick Flash Approx. 0.1 to 3.3 sec. Based on new AA/LR6 alkaline batteries and Canon’s testing standards. The Quick Flash function enables flash shooting before the flash is fully charged (p.16). Using AA/LR6 batteries other than the alkaline type may cause improper battery contact due to the irregular shape of the battery contacts.

When <!> is displayed, replace the batteries with new ones. Use a new set of four batteries of the same brand. When replacing the batteries, replace all four at one time. AA/LR6 rechargeable Ni-MH or lithium batteries can also be used. Attaching and Detaching the Flash Before attaching or detaching the Speedlite, be sure to turn off the Speedlite.

Turning on the Power About Quick Flash The Quick Flash function enables flash shooting while the flash-ready lamp is green (before the flash is fully charged). The guide number is 1/2 to 1/6 of the full output, but it is useful for shooting with a faster recycling time at a short shooting distance.

About the Lock Function By setting the power switch to <a>, you can disable flash’s button and dial operations. Use this to prevent the flash function settings from being accidentally changed after you set them. If you operate a button or dial, <LOCKED> is displayed on the LCD panel (the functions displayed above function buttons 1 to 4, such as <[>...

Fully Automatic Flash Shooting When you set the camera’s shooting mode to <V> (Program AE) or Full Auto, you can shoot in E-TTL II/E-TTL fully automatic flash mode. Even when attached to a camera that supports E-TTL II autoflash system, <a> is displayed on the LCD panel. If the flash exposure confirmation lamp does not light or if the subject is dark (underexposed) when you check the image on the camera’s LCD monitor, move closer to the subject and shoot again.

Using E-TTL II and E-TTL Autoflash in the Shooting Modes Just set the camera’s shooting mode to <X> (Shutter-priority AE), <W> (Aperture-priority AE), or <q> (Manual exposure) and you can use E-TTL II/E-TTL autoflash. Select this mode when you want to set the shutter speed manually. The camera will then automatically set the aperture matching the shutter speed to obtain a standard exposure.

Using E-TTL II and E-TTL Autoflash in the Shooting Modes About Auto Zoom Adjustment to Image Sensor Size EOS digital cameras have three sizes of image sensors, and the effective focal length of the mounted lens varies depending on the model. This flash automatically recognizes the image sensor size of each EOS digital camera, and automatically adjusts the optimum flash coverage for the effective focal length of the lens in a range of 20 to 200 mm.

Advanced Flash This chapter describes advanced shooting operations using the flash functions. When the camera’s shooting mode is set to a fully automatic mode or an Image Zone mode, the operations other than “Bounce” (p.27, 29), “Wide Panel” (p.30) and “Color Filters” (p.39) in this chapter are not available.

f Flash Exposure Compensation In the same way as normal exposure compensation, you can set exposure compensation for flash. The flash exposure compensation amount can be set up to ±3 stops in 1/3-stop increments. Generally, set an increased exposure compensation for bright subjects and set a decreased exposure compensation for dark subjects.

g FEB You can take three shots while automatically changing the flash output. This is called FEB (Flash Exposure Bracketing). The settable range is up to ±3 stops in 1/3-stop increments. After the three shots are taken, FEB is canceled automatically. Before shooting with FEB, it is recommended to set the camera’s drive mode to single shooting and check that the flash is recycled.

7: FE Lock FE (Flash Exposure) lock locks the correct flash exposure setting for any part of the scene. While <a> is displayed on the LCD panel, press the camera’s < > button. On cameras without a < or <P> (AE lock) button. If a correct exposure cannot be obtained when FE lock is performed, <Q>...

c High-speed Sync With high-speed sync, the flash can synchronize with all shutter speeds. This is convenient when you want to use aperture-priority AE for fill-flash portraits of a subject. When using the flash with EOS cameras compatible with E-TTL and released up to 2011, high-speed sync is not possible with radio transmission wireless flash shooting (p.51).

r Second-curtain Sync Shooting with a slow shutter speed and second-curtain sync captures the trajectory of moving light sources, such as car lights, in a natural way. The flash fires right before the exposure finishes (shutter closes). Second-curtain sync works well when the camera’s shooting mode is set to “buLb”.

Bounce By pointing the flash head toward a wall or ceiling, the flash will bounce off the surface before illuminating the subject. This can soften shadows behind the subject for a more natural-looking shot. This is called bounce flash. Set the Bounce Direction You can turn (bounce) the flash head while pressing the <z>...

Bounce Catchlight Panel Using the catchlight panel enables you to reflect light in a person’s eyes and create a more vivid expression. Position the flash head towards the front and 90° up. When the flash head is rotated to the left or right, the catchlight is not very effective. To effectively obtain the catchlight in a person’s eyes, shoot within 1.5 m (4.9 ft.) of the subject.

n Short Distance Flash Shooting e: Flash Coverage Setting “Automatic” and “Manual” settings are available as the flash coverage settings. In the auto setting, the flash coverage is automatically adjusted according to the focal length of the shooting lens. With the manual setting, you can set any flash coverage in a range of 20 to 200 mm.

e: Flash Coverage Setting When the flash coverage is set to manual, set a flash coverage that is wider than the angle of view you are shooting, to prevent the periphery of the picture from being darker. When a lens with a focal length inferior to 20 mm is mounted, the <O>...

q: Manual Flash You can set the flash output from 1/128 power to 1/1 full output in 1/3- stop increments. Use a hand-held flash meter to determine the required flash output to obtain a correct flash exposure. Setting the camera’s shooting mode to <W>...

q: Manual Flash Metered Manual Flash Exposures When the Speedlite is used with the EOS-1D series, you can also set the flash exposure level manually. This is convenient for shooting at a short distance from the subject. Use a commercially available 18% gray card and shoot as follows.

?: Stroboscopic Flash When using stroboscopic flash with a slow shutter speed, you can shoot multiple successive movements within a single picture, similar to stop- motion pictures. In stroboscopic flash, set the flash output, number of flashes, and flash frequency (number of flashes per second = Hz). For the maximum number of continuous flashes, see page 35.

?: Stroboscopic Flash Calculating the Shutter Speed In stroboscopic flash, to ensure that the shutter stays open until the end of the continuous flashes, set the camera with a shutter speed calculated with the following equation. Number of flashes ÷ flash frequency = shutter speed For example, if the number of flashes is set to 10 (times) and flash frequency to 5 (Hz), set the shutter speed to 2 sec.

Maximum Number of Continuous Flashes Flash Output 1/16 1/32 1/64 1/128 Flash Output 1/16 1/32 1/64 1/128 When the number of flashes is displayed as “---” (bar display), the maximum number of flashes is as shown in the tables. 1 to 199 Hz Flash Output Number of...

//.: Flash External Metering The Speedlite’s built-in external metering sensor measures the flash reflected from the subject in real time, and stops the flash when the standard exposure is reached. “Auto external flash metering” can be used with the EOS digital cameras released since 2007.

.: Manual External Flash Metering You can manually set the Speedlite with the ISO speed and aperture set in the camera. The flash output is automatically adjusted according to the ISO speed and aperture that you set. You can check the effective flash range on the Speedlite’s LCD panel. When using manual external flash metering and shooting with the camera and Speedlite’s PC terminal connected by a commercially-available sync cord, you can shoot with the flash off the camera.

Modeling Flash When the camera’s depth-of-field preview button is pressed, the flash fires continuously for 1 sec. This is called the modeling flash. It enables you to see the shadow effects on the subject, and the lighting balance during wireless flash shooting (p.47, 75). Press the depth-of-field preview button on the camera.

o Color Filter When the color temperature of the Speedlite and the color temperature of the light illuminating the subject are different, unnatural colors may result for the subject background where the flash does not reach. By using a supplied color filter suitable for the color temperature of the illuminating light while firing the flash, you can shoot the subject and background colors with an appropriate white balance.

o Color Filter Commercially-available Color Filters When using a commercially-available 75 x 75 mm filter (3 in. x 3 in.), disable the automatic filter detection function (P.Fn-05-1/p.102). If you use a commercially- available color filter with P.Fn-05-0 set, <l> may be displayed. Shoot a picture with the filter attached in the actual shooting environment and set it for manual white balance.

Setting Flash Functions with Camera Operations This chapter describes how to set the flash functions from the camera’s menu screen. When the camera’s shooting mode is set to a fully automatic mode or an Image Zone mode, the operations in this chapter are not available.

Flash Control from Camera’s Menu Screen When using EOS digital cameras released since 2007, you can set flash functions or Custom Functions from the camera’s menu screen. For the camera operations, see the camera’s instruction manual. Flash Function Setting Example of EOS-1D X screen The cameras released from 2007 to 2011 are as follows.

Settings Available in [Flash function settings] EOS digital cameras released since 2012 When using the flash with cameras such as EOS-1D X, you can set the functions for “Normal shooting”, “Radio transmission wireless shooting” or “Optical transmission wireless shooting” in the [Flash function settings] screen.

Flash Control from Camera’s Menu Screen Flash firing To perform flash shooting, set to [Enable]. To use the flash’s AF- assist beam only, set to [Disable]. E-TTL II flash metering For normal exposures, set it to [Evaluative]. If [Average] is set, the flash exposure will be averaged for the entire scene metered by the camera.

Zoom (flash coverage) You can set the flash coverage for the Speedlite. When [Auto] is selected, the flash coverage is set automatically according to the focal length of the lens. Wireless flash functions (setting) You can perform wireless flash shooting. Two wireless flash shooting methods are available;...

Flash Control from Camera’s Menu Screen Flash Custom Function Settings The displayed contents vary depending on the camera. When C.Fn-20 to 23 are not displayed, set them by operating the flash unit. For the Custom Functions, see pages 95 to 100. When using a camera released up to 2011, the C.Fn-20 to 23 settings are not cleared even if [Clear all Speedlite C.Fn’s] is selected.

Wireless Flash Shooting: Radio Transmission This chapter describes wireless flash shooting using radio transmission. For the accessories required for radio transmission wireless shooting, see the system map (p.104). For the regions of use, restrictions, and precautions related to radio transmission, refer to the separate leaflet.

' Radio Transmission Wireless Flash Shooting Using a Canon Speedlite (master/slave) with a radio transmission wireless shooting function makes it easy to shoot with advanced wireless multiple flash lighting, in the same way as normal E-TTL II/ E-TTL autoflash shooting.

Wireless Multiple Flash Shooting You can divide the slave units into two or three groups and perform E-TTL II/E-TTL autoflash shooting while changing the flash ratio (factor). In addition, you can set and shoot with a different flash mode for each firing group, for up to 5 groups. Autoflash Shooting with Two Slave Groups Autoflash Shooting with Three Slave Groups ' Radio Transmission Wireless Flash Shooting...

' Radio Transmission Wireless Flash Shooting Shooting with a Different Flash Mode set for Each Group Auto external flash metering E-TTL II Manual flash Difference between Radio Transmission and Optical Transmission Wireless shooting using radio transmission has advantages over wireless shooting using optical transmission, such as being less affected by obstacles, and not having to point the slave unit’s wireless sensor toward the master unit.

About Restrictions on Functions Depending on the Camera Used When performing radio transmission wireless flash shooting, restrictions may apply to the flash mode, maximum flash sync speed (referred to below as the “flash sync speed”) and high-speed sync function, depending on the camera that you use. EOS digital cameras released since 2012 When using the flash with a camera such as the EOS-1D X, you can shoot without any restrictions on the flash mode and flash sync...

Wireless Settings To perform radio transmission wireless shooting, set the master unit and slave unit with the following procedure. Master Unit Setting Slave Unit Setting To perform normal flash shooting, press the < wireless (master/slave) settings. Transmission Channel/Wireless Radio ID Settings To avoid interference with wireless multiple flash systems using radio transmission that are used by other photographers, or with other devices that use radio waves (wireless), you can change the...

Setting the Transmission Channel/Wireless Radio ID of the Master Unit and Slave Unit Use the following procedure to set the transmission channels and wireless radio IDs of the master unit and slave unit. Set the same channel and ID for both the master unit and slave unit. The procedure is the same for the master unit and slave unit.

Wireless Settings Scanning the Master Unit Transmission Channels to Set You can scan the radio reception status and set the master unit’s transmission channel automatically or manually. When the channel is set to “AUTO”, the channel with the best reception signal is automatically set.

About the <D> Lamp The color of the <D> lamp changes depending on the transmission status of the master unit and the slave unit. Color Status Description Transmission Green Not connected Too many units Blinking If the transmission channels of the master unit and slave unit are different, the slave unit does not fire.

Wireless Settings About the Memory Function You can save the wireless settings in the master unit and slave unit, and recall the settings later. Operate the master unit or slave unit separately depending on which unit’s settings are to be saved or recalled. Press function button 4.

a: Fully Automatic Wireless Flash Shooting Autoflash Shooting Using One Slave Unit This section describes basic fully automatic wireless shooting when using a 600EX-RT attached to the camera (master) and a 600EX-RT wirelessly controlled (slave). Set the master unit. Set the 600EX-RT attached to the camera as the master unit (p.52).

a: Fully Automatic Wireless Flash Shooting Set the flash mode to <a>. Press the <E> button on the master unit and set the flash mode to <a>. The slave unit is set automatically to <a> during shooting via the control from the master unit. To also fire the master unit, set the master flash firing to ON (p.55).

If the <D> lamp is red, radio transmission has not been established. Check again the transmission channels and wireless radio IDs of the master unit and slave unit. If you cannot connect with the same settings, turn the power off and on again. Autoflash Shooting Using Multiple Slave Units The master/slave flash coverage is set automatically to 24 mm.

a: Fully Automatic Wireless Flash Shooting Using Fully Automatic Wireless Flash Flash exposure compensation and other settings set on the master unit will also be automatically set in the slave unit(s). You do not need to operate the slave unit. Wireless flash shooting with the following settings can be performed in the same way as in normal flash shooting.

a: Wireless Multiple Flash Shooting with Flash Ratio Autoflash Shooting with Two Slave Groups You can divide the slave units into two firing groups, A and B, and adjust the lighting balance (flash ratio) for shooting. The exposure is controlled automatically so that the total flash output of firing groups A and B results in the standard exposure.

Slave Group Control Firing group A Gr = A Gr = A Gr = A For example, if you set a firing group with three slave units to <4>, the three units are treated and controlled as a single firing group A with a large flash output.

q: Wireless Multiple Flash Shooting with Manual Flash Output This describes wireless (multiple flash) shooting using manual flash. You can shoot with a different flash output setting for each slave unit (firing group). Set all parameters on the master unit. When ALL <_>...

[: Shooting with a Different Flash Mode for Each Group Ceiling Wireless flash shooting using the <[> flash mode cannot be performed with cameras released up to 2011. Shooting with up to 3 groups (A/B/C) is set (p.62). When using an EOS digital camera released since 2012, such as the EOS- 1D X, you can shoot with a different flash mode set for each firing group, with up to...

[: Shooting with a Different Flash Mode for Each Group Set the flash mode. Set the flash mode of each firing group by operating the master unit. While <M> is displayed, press function button 3 <F> and turn <9> to select the group. Press function button 2 <2>...

When the flash mode of the firing group is set to <a> or </>, exposure is controlled to obtain a standard exposure for the main subject as a single group. If you shoot with multiple firing groups pointing toward the main subject, overexposure may result.

Remote Release from a Slave Unit In radio transmission wireless shooting, you can perform remote release (remote control shooting) from a 600EX-RT set as a slave unit. When shooting with this function, the “Release Cable SR-N3” (sold separately) may be needed, depending on your camera. Cameras Compatible with Slave Unit Remote Release For EOS digital cameras released since 2012, such as the EOS-1D X, the “Release Cable SR-N3”...

Remote Release from a Slave Unit Connect the release cable while the power of the camera and the Speedlite is off. Shooting is not possible when focusing with autofocus fails. Focusing manually before performing remote release is recommended. The “Release Cable SR-N3” (sold separately) is for an N3 type remote control terminal.

Linked Shooting with Radio Transmission Linked shooting is a function that automatically releases the shutter of a slave unit camera by linking it to a master unit camera. You can shoot with linked shooting for up to 16 units, including both master units and slave units.

Linked Shooting with Radio Transmission Set the flash or transmitter to normal shooting. Press the <I> button to set to normal flash shooting. Check that <'> (radio transmission) and <:> (optical transmission) are not displayed on the LCD panel. Set to linked shooting mode. Press the <I>...

Linked Shooting with Radio Transmission Set all the Speedlites. Repeat steps 1 to 4 and set all the Speedlites to “Master unit” or “Slave unit” in the linked shooting mode. Set the transmitters used in linked shooting in the same way. When pressing the <I>...

Linked Shooting with Radio Transmission Shooting with manual focus is recommended for the slave unit cameras. If focus cannot be achieved with autofocus, linked shooting is not possible with the corresponding slave unit camera. There is a short time lag between the release of the slave unit camera and the release timing of the master unit camera.

Wireless Flash Shooting: Optical Transmission This chapter describes wireless flash shooting using optical transmission. For the accessories required for optical wireless transmission, see the system map (p.104). When the camera’s shooting mode is set to a fully automatic mode or an Image Zone mode, the operations in this chapter are not available.

:Optical Transmission Wireless Flash Shooting Using a Canon Speedlite (master/slave) with an optical transmission wireless shooting function makes it easy to shoot with advanced wireless multiple flash lighting, in the same way as normal E-TTL II/E- TTL autoflash shooting. The system is designed so that the settings of the 600EX-RT/600EX attached to the camera (master) are automatically reflected on the Speedlite that is wirelessly controlled (slave).

Wireless Multiple Flash Shooting You can divide the slave units into two or three groups and perform E-TTL II/E-TTL autoflash shooting while changing the flash ratio (factor). Autoflash Shooting with Two Slave Groups Autoflash Shooting with Three Slave Groups Before shooting, perform a test flash (p.16) and test shooting. To avoid interfering with transmission, do not place any obstacles between the master unit and slave units.

If the transmission channels of the master unit and slave unit are different, the slave unit does not fire. Set both to the same number. Master Flash Firing ON/OFF You can set whether or not to fire, as a wireless flash, the master unit that controls the slave unit.

Wireless Settings About the Memory Function You can save the wireless settings in the master unit and slave unit, and recall the settings later. Operate the master unit or slave unit whose settings are to be saved or recalled. Press function button 4. On the master unit, press function button 4 to display <O>.

a: Fully Automatic Wireless Flash Shooting Autoflash Shooting Using One Slave Unit This section describes basic fully automatic wireless shooting when using a 600EX-RT/600EX attached to the camera (master) and a 600EX-RT/ 600EX wirelessly controlled (slave). Set the master unit. Set the 600EX-RT/600EX attached to the camera as the master unit (p.78).

a: Fully Automatic Wireless Flash Shooting Check the transmission channel. If the channels of the master unit and slave unit are different, set them to the same number (p.78). Position the camera and the flash. Position them within the range shown on page 76.

Autoflash Shooting Using Multiple Slave Units If there is a fluorescent light or PC monitor near a slave unit, the presence of the light source may cause the slave unit to malfunction, causing it to fire inadvertently. The master/slave flash coverage is set automatically to 24 mm. You can also set the flash coverage manually.

a: Fully Automatic Wireless Flash Shooting Using Fully Automatic Wireless Flash Flash exposure compensation and other settings set on the master unit will also be automatically set in the slave unit(s). You do not need to operate the slave unit. Wireless flash shooting with the following settings can be performed in the same way as in normal flash shooting.

a: Wireless Multiple Flash Shooting with Flash Ratio Autoflash Shooting with Two Slave Groups You can divide the slave units into two firing groups, A and B, and adjust the lighting balance (flash ratio) for shooting. The exposure is controlled automatically so that the total flash output of firing groups A and B results in the standard exposure.

Slave Group Control Firing group A Gr = A Gr = A Gr = A For example, if you set a firing group with three slave units to <4>, the three units are treated and controlled as a single firing group A with a large flash output.

q: Wireless Multiple Flash Shooting with Manual Flash Output This describes wireless (multiple flash) shooting using manual flash. You can shoot with a different flash output setting for each slave unit (firing group). Set all parameters on the master unit. When ALL <_>...

Manual Flash/Stroboscopic Flash Setting on a Slave Unit You can directly operate the slave unit to manually set the manual flash or stroboscopic flash. This function is called individual slave. This is convenient when, for example, you use the Speedlite Transmitter ST-E2 (sold separately) to perform wireless manual flash or stroboscopic flash.

This chapter describes how to customize the Speedlite with the Custom Functions (C.Fn) and Personal Functions (P.Fn). When the camera’s shooting mode is set to a fully automatic mode or an Image Zone mode, the operations in this chapter are not available. Set the camera’s shooting mode to V/X/ W/q/ 5 (Creative Zone mode).

C: Setting Custom Functions " C.Fn-00: You can select the distance indicator display for the LCD panel from meters and feet. 0: m (Meters (m)) 1: ft (Feet (ft)) When the effective flash distance exceeds 18 m/60 ft., the right end of the effective flash range on the LCD panel changes to <i>.

C: Setting Custom Functions C.Fn-03: You can set whether or not to cancel FEB automatically after shooting three shots with FEB. 0: ON (Enabled) 1: OFF (Disabled) C.Fn-04: (FEB sequence) You can change the order of the FEB sequence: 0: Standard exposure, –: Decreased exposure (darker) and +: Increased exposure (brighter).

C.Fn-06: You can set whether or not to fire the flash in continuous shooting while the flash-ready lamp is lit green (before the flash is fully charged). 0: OFF (Disabled) 1: ON (Enabled) When Quick Flash is fired during continuous shooting, underexposure may occur since the effective flash range becomes shorter.

C: Setting Custom Functions C.Fn-09: (Auto zoom for sensor size) 0: ON (Enabled) When the flash coverage is set to “Automatic <L>”, it is automatically adjusted to match the image sensor size of the EOS digital camera being used. When mounted on a supported camera, <S> is displayed on the LCD panel.

C.Fn-12: (Flash recycle with external power) 0: 1 (External & internal power) Charges in parallel using both internal power and external power. 1: 2 (External power only) Internal power is needed to control the Speedlite. By using only external power for charging, you can minimize the depletion of the internal power. C.Fn-13: (Flash exposure metering setting) 0: 4 (Speedlite button and dial)

C: Setting Custom Functions C.Fn-21: You can change the light distribution (flash coverage) of the Speedlite in relation to the shooting angle of view when the flash coverage is set to “Automatic (L)”. 0: 8 (Standard) The optimum flash coverage for the shooting angle of view is set automatically.

>: Setting Personal Functions P.Fn-01: (LCD panel display contrast) P.Fn-02: (LCD panel illumination color: Normal shooting) You can select the color of the LCD panel illumination during normal shooting (on-camera flash). 0: GREEN (Green) 1: ORANGE (Orange) P.Fn-03: (LCD panel illumination color: Master) During wireless flash shooting using radio or optical transmission or linked shooting: You can select the color of the LCD panel illumination to be used when the Speedlite is set as the master unit.

>: Setting Personal Functions P.Fn-05: (Color filter auto detection) 0: AUTO (Auto) Set this option when the supplied color filters are used. They are automatically detected. 1: OFF (Disable) Set this option when you use commercially-available filters. The color filter will not be automatically detected. P.Fn-06: (Wireless button toggle sequence) You can change the settings that can be selected when the wireless button...

(p.70) during radio transmission wireless shooting. For external power, use the . Compact Battery Pack CP-E4. Using an external power source other than Canon may result in a malfunction. 600EX-RT/600EX System (supplied with 600EX-RT/600EX)

Flash Firing Restriction due to Temperature Increase When continuous flash, stroboscopic flash or modeling flash is repeatedly fired in short intervals, the temperature of the flash head may increase. When repeated firings of the flash exceed the values shown in the table below, the flash firing restriction activates automatically to avoid degrading and damaging the flash head due to overheating.

If a problem occurs with the flash, first refer to this Troubleshooting Guide. If this Troubleshooting Guide does not resolve the problem, contact your dealer or nearest Canon Service Center. Normal Shooting Power does not turn on or the flash does not fire.

Troubleshooting Guide The bottom of the picture looks dark. You were too close to the subject. Move away from the subject. When shooting within 1 m (3.3 ft.) of the subject, set the bounce position down by 7°. Remove the lens hood if attached. The picture periphery looks dark.

Radio Transmission Wireless Shooting Wireless shooting does not work. When using a Speedlite 600EX (without radio transmission function), wireless shooting using radio transmission is not available. Use optical transmission wireless shooting. The slave unit does not fire. Set the master unit to <'> <M> and set the slave unit to <'> <x>...

Troubleshooting Guide <k> is displayed. Set the shutter speed 1 stop slower than the flash sync speed (p.51). Cannot release from a slave unit. When an EOS camera which was released up to 2011, has an N3 type remote control terminal and is compatible with E-TTL II/E-TTL autoflash is used to perform remote release from a slave unit or when it has been set as the slave unit during linked shooting, the “Release Cable SR-N3”...

Optical Transmission Wireless Shooting The slave unit does not fire. Set the master unit to <:> <M> and set the slave unit to <:> <x> (p.78). Set the transmission channels of the master unit and slave unit to the same numbers (p.78). Check that the slave unit is within the transmission range of the master unit (p.76).

Using with a Type-B Camera This section describes the available and unavailable functions when using the Speedlite 600EX-RT/600EX with a Type-B camera (EOS film camera supporting TTL autoflash). When the Speedlite 600EX-RT/600EX is used with autoflash with a Type-B camera, <b> is displayed on the Speedlite’s LCD panel. Functions available with Type-B cameras TTL autoflash Speedlite flash exposure compensation...

The cameras and accessories referred to in this Instructions booklet are current as of January 2012. For information on compatibility with the cameras and accessories marketed after this date, contact your nearest Canon Service Center.